ILoveHiFi wrote:
You need to use coax cables for input wires, not twisted pairs as offers very litte or zero proetion against noise pick up.
viewtopic.php?f=9&t=6392&start=70Theres also quite a few plorbems which you also may be doing which I disscussed with another dude in this thread.
Thnk you for reply, last weekend i tried something and here is results
- Replaced coax cable in input signal wire like you said - nothing change, i notice when i touch to the cable or input caps the noise go heavier.
- Then i replaced input jack cable with a coax calbe too, the noise reduce abit.
- This buzz noise complete disapear when i touch to the volume pot (which shorted to pot gnd), but in my country there have no any ground system in house, and my department on 4th floor ...
- I thought about volume pot, then i remove volume pot (left input signal with 100 ohm resistors) and yea, buzz noise gone. The only noise i can notice is small hum (maybe from my power which i reduted it by diode bridge). Buzz noise still apear when i touch to input wire or input caps.
So is it all about my volume pot have bad quality ????- Larger power caps i put to power, the hum go smaller but still noticed when source silent, the problem is i feel with about 4700uf, the sound quality gone so heavy and not clear , after few calculator i found on internet, i plan make a lc filter (3mh coil inductance and 1000uf caps) hope it will go well.
Srry for my bad english